Looking at the notation, it is clipped on the right by the logo that was pasted and whited in place. But examining it with a light behind, the line that says "Jeanne" could be J
"Jeanne:" or could be "Jeanne's" and it is hard to tell what is on the end of it.
"Jeanne" is in standard pencil, "byline?" is in blue pencil, and "by Douglas McKee" is in regular pencil in a different hand, printed out rather that the script of the other lines.
I think it could very well be the first production person putting "byline?" before passing it back to the editor. But I am confused why "Jeanne: byline?" would be done half in one pencil, half in another.